Sand tube holder is a small‑size precision grinding fixture specially designed for mounting sand tube mandrels. It works with handheld grinding tools such as electric grinders and hanging grinders. Tighten the lock nut to fix the sand tube firmly, preventing slipping and eccentric shaking during high‑speed rotation.
It is widely used for mold inner‑hole polishing, fine trimming of small metal holes, and precision grinding for jewelry and small hardware workpieces. When selecting, check the collet inner diameter and machine shaft diameter to match the sand tube shank. Choose holders with good concentricity for stable grinding performance. Wear safety goggles during operation and confirm full locking before starting work.
